Organic light-emitting component

Patent metadata

Field	Value
Publication number	US-2016308169-A1
Application number	US-201415101407-A
Country	US
Kind code	A1
Filing date	Dec 2, 2014
Priority date	Dec 4, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

An organic light-emitting component ( 100 ) is specified, which comprises a carrier ( 1 ) and an organic layering sequence ( 2 ) arranged on the carrier ( 1 ). The organic layering sequence ( 2 ) comprises at least two organic layers, wherein at least one of the organic layers is designed as an emitting layer ( 23 ). The emitting layer ( 23 ) emits light ( 200 ) of a first wavelength range, which has an intensity maximum at a first wavelength. Further, the organic light-emitting component ( 100 ) comprises an anode ( 3 ) and a cathode ( 4 ) which provide the electrical contacting of the organic layering sequence ( 2 ). Further, the organic light-emitting component ( 100 ) has at least one nanoparticle layer ( 20 ), wherein one nanoparticle layer ( 20 ) is an organic layer of the organic layering sequence ( 2 ) provided with first nanoparticles ( 5 ). The first nanoparticles ( 5 ) have a refractive index (nN) that is smaller than at least one refractive index of an organic material of one of the organic layers. Further, at least one nanoparticle layer ( 20 ) is not in direct contact with the anode ( 3 ). In addition, the first nanoparticles ( 5 ) have a diameter that is smaller than one-fourth of the first wavelength at which the light ( 200 ) emitted by the emitting layer ( 23 ) has an intensity maximum.

First claim

1 . A light-emitting component, comprising
a carrier, an organic layer sequence comprising at least two organic layers, said organic layer sequence being arranged on the carrier, wherein at least one of the organic layers is embodied as an emitter layer, which emits light in a first wavelength range having an intensity maximum at a first wavelength, a first electrode and a second electrode, wherein the first electrode is embodied as an anode and the second electrode is embodied as a cathode, and wherein the anode and the cathode are provided for electrically contacting the organic layer sequence, and at least one nanoparticle layer, wherein a nanoparticle layer is an organic layer of the organic layer sequence that is provided with first nanoparticles, wherein the first nanoparticles have a refractive index (n N ) that is less than at least one refractive index of an organic material of one of the organic layers, wherein at least one nanoparticle layer is not in direct contact with the anode, and wherein the first nanoparticles have a diameter that is less than one quarter of the first wavelength.

2 . The component according to claim 1 , wherein
at least one organic layer that adjoins the anode is free of first nanoparticles, and wherein said layer is embodied as a hole injection layer, the difference between the refractive index of the nanoparticle layer and the refractive index of the anode and/or of the cathode and/or the carrier is ≦0.1.

3 . The component according to claim 1 ,
wherein the first nanoparticles have a diameter of less than or equal to 10 nm, and wherein the first nanoparticles comprise SiO 2 and/or MgF 2 as material component.

4 . The component according to claim 1 , wherein at least one organic layer that adjoins the anode is free of first nanoparticles, and wherein said layer is embodied as a hole injection layer.

5 . The component according to claim 1 , wherein all the organic layers are embodied as nanoparticle layers.

6 . The component according to claim 1 , wherein a proportion by volume of the first nanoparticles in the at least one nanoparticle layer is at least 10% and a maximum of 70%.

7 . The component according to claim 1 , wherein the refractive index of the first nanoparticles (n N ) for visible light is between 1.3 and 1.6.

8 . The component according to claim 1 , wherein the first nanoparticles comprise a light-converting material, which at least partly absorbs light in a first wavelength range emitted by the emitter layer and converts it into light in a second wavelength range.

9 . The component according to claim 1 , wherein, in addition to the first nanoparticles, second nanoparticles are introduced into the organic layer sequence, wherein the second nanoparticles have diameters of ≧150 nm.

10 . The component according to claim 1 , wherein the at least one emitter layer has a thickness of between 100 nm and 400 nm inclusive, and wherein the organic layer sequence has a total thickness of between 200 nm and 1000 nm inclusive.

11 . The component according to claim 1 , wherein the layer sequence comprises a plurality of emitter layers provided for emitting electromagnetic radiation, and wherein at least one charge generating layer is situated between at least two of the emitter layers.

12 . The component according to claim 1 , wherein exclusively the emitter layer or the emitter layers comprise(s) first and/or second nanoparticles.

13 . The component according to claim 1 , wherein coupling-out structures are introduced between at least one of the two electrodes and the organic layer sequence.

14 . The component according to claim 12 , wherein the coupling-out structures comprise the second nanoparticles.

15 . The component according to claim 1 , wherein the anode and/or the cathode comprise(s) a transparent conductive oxide material and/or silver nanowires and/or a metal lattice that is integrated into an organic hole injection layer and/or into an organic electron injection layer.

16 . A light-emitting component, comprising
a carrier, an organic layer sequence comprising at least two organic layers, said organic layer sequence being arranged on the carrier, wherein at least one of the organic layers is embodied as an emitter layer, which emits light in a first wavelength range having an intensity maximum at a first wavelength, a first electrode and a second electrode, wherein the first electrode is embodied as an anode and the second electrode is embodied as a cathode, and wherein the anode and the cathode are provided for electrically contacting the organic layer sequence, wherein all the organic layers are embodied as nanoparticle layers, except one organic layer that directly adjoins the anode, wherein a nanoparticle layer is an organic layer of the organic layer sequence that is provided with first nanoparticles, wherein the first nanoparticles have a refractive index (n N ) that is less than at least one refractive index of an organic material of one of the organic layers, wherein the first nanoparticles have a diameter that is less than one quarter of the first wavelength, wherein the first nanoparticles have a diameter of less than or equal to 10 nm, wherein the difference between the refractive index of the nanoparticle layer and the refractive index of the anode and/or of the cathode and/or the carrier is ≦0.1, wherein a proportion by volume of the first nanoparticles in the at least one nanoparticle layer is at least 10% and a maximum of 70%, wherein the organic layer that adjoins the anode is free of first nanoparticles.

17 . A light-emitting component, comprising
a carrier, an organic layer sequence comprising at least two organic layers, said organic layer sequence being arranged on the carrier, wherein at least one of the organic layers is embodied as an emitter layer, which emits light in a first wavelength range having an intensity maximum at a first wavelength, a first electrode and a second electrode, wherein the first electrode is embodied as an anode and the second electrode is embodied as a cathode, and wherein the anode and the cathode are provided for electrically contacting the organic layer sequence, wherein all the organic layers are embodied as nanoparticle layers, wherein a nanoparticle layer is an organic layer of the organic layer sequence that is provided with first nanoparticles, wherein the first nanoparticles have a refractive index (n N ) that is less than at least one refractive index of an organic material of one of the organic layers, wherein the first nanoparticles have a diameter that is less than one quarter of the first wavelength, wherein the first nanoparticles have a diameter of less than or equal to 10 nm, wherein the difference between the refractive index of the nanoparticle layer and the refractive index of the anode and/or of the cathode and/or the carrier is ≦0.1, wherein a proportion by volume of the first nanoparticles in the at least one nanoparticle layer is at least 10% and a maximum of 70%.

Assignees

• Osram Oled Gmbh

Inventors

• Fleissner Arne
• Philippens Marc

Classifications

• H10K50/858

  comprising refractive means, e.g. lenses · CPC title

• H10K59/879 Primary

  comprising refractive means, e.g. lenses · CPC title

• H01L51/5275 Primary

  Electricity · mapped topic

• H01L51/52

  Electricity · mapped topic

• H01L51/5024

  Electricity · mapped topic